Again rhythm more readily
admits of rests1 although they are found in metre as
well. Greater license is, however, admitted when
the time is measured by the beat of the feet or
fingers,2 and the intervals are distinguished by
certain symbols indicating the number of shorts
contained within a given space: hence we speak of
four or five time (τετράσημοι, or πεντάσημοι) and others
longer still, the Greek σημεῖον indicating a single beat.
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